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nvh265sldec: Add support for delayed output

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Delay 4 frames in case of non-live to improve throughput

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1937>
This commit is contained in:
Seungha Yang 2022-03-12 01:12:25 +09:00 committed by GStreamer Marge Bot
parent 1a0d5bff61
commit b3df58add1
1 changed files with 17 additions and 0 deletions
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17
subprojects/gst-plugins-bad/sys/nvcodec/gstnvh265dec.c
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@ -144,6 +144,9 @@ static GstFlowReturn gst_nv_h265_dec_decode_slice (GstH265Decoder * decoder,
GArray * ref_pic_list0, GArray * ref_pic_list1);
static GstFlowReturn gst_nv_h265_dec_end_picture (GstH265Decoder * decoder,
GstH265Picture * picture);
static guint
gst_nv_h265_dec_get_preferred_output_delay (GstH265Decoder * decoder,
gboolean live);
static void
gst_nv_h265_dec_class_init (GstNvH265DecClass * klass)
@ -182,6 +185,8 @@ gst_nv_h265_dec_class_init (GstNvH265DecClass * klass)
GST_DEBUG_FUNCPTR (gst_nv_h265_dec_decode_slice);
h265decoder_class->end_picture =
GST_DEBUG_FUNCPTR (gst_nv_h265_dec_end_picture);
h265decoder_class->get_preferred_output_delay =
GST_DEBUG_FUNCPTR (gst_nv_h265_dec_get_preferred_output_delay);
GST_DEBUG_CATEGORY_INIT (gst_nv_h265_dec_debug,
"nvh265dec", 0, "Nvidia H.265 Decoder");
@ -921,6 +926,18 @@ gst_nv_h265_dec_end_picture (GstH265Decoder * decoder, GstH265Picture * picture)
return GST_FLOW_OK;
}
static guint
gst_nv_h265_dec_get_preferred_output_delay (GstH265Decoder * decoder,
gboolean live)
{
/* Prefer to zero latency for live pipeline */
if (live)
return 0;
/* NVCODEC SDK uses 4 frame delay for better throughput performance */
return 4;
}
typedef struct
{
GstCaps *sink_caps;